If you are having this error in facebook then it means you have not entered the Facebook APP ID in our AMP option panel
If you don’t know how to get Facebook APP ID then follow these steps.
Navigate to the Settings -> Basic page, copy the App ID and App Secret. This App ID and App secret are required to access the Facebook APIs.
First go to WordPress Admin Area -> AMP option panel -> Design -> Social -> You need to enter Facebook APP ID
That’s it for this tutorial!
We hope it helped you. If you have any feedback or questions, then please share them in the comments section below.